I have a suggestion on improving the ladder system. If I understand it correctly, you need to play at least 100 rounds in the last 21 days. But not only once, to enter the ladder, you need to do it all the time. I do not show up on the ladder and I guess it's because I didn't play enough rounds in the last 21 days. Well, I could live with that, but it seems as if the system deleted my score and the whole statistic, so I had to start from zero. Any hope you could change that?

Err, what I wanted to say was this: It would be nice to keep the "won rounds" etc. statistics, because it seems as if the system deleted it. Before I dissappeared from the ladder, I had more than 400 rounds in total.

The ladder database keeps a log of each player for each day. The ladder page (and in game ladder) only looks at data for the previous 21 days.
Those 400 rounds must have mainly been played between 21-30 days ago.

I have to clean old data out of the database as it becomes very large very quickly.
The only data that isn't deleted is the match results.